Andrew M. answered 08/20/15
Tutor
New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
Let B = #boys
Let G = # girls
B = G + 13
B+G = 65
Replace B with G+13 in bottom equation
G + 13 + G = 65
2G = 65-13
2G = 52
G = 26
There are 26 girls
B = G = 13 = 39 Boys